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发明名称
Improvements in or relating to defensive structures
摘要
申请公布号
GB473874(A)
申请公布日期
1937.10.21
申请号
GB19370011129
申请日期
1937.04.19
申请人
PIERRE VAN DEUREN
发明人
分类号
E02B3/06
主分类号
E02B3/06
代理机构
代理人
主权项
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